Protective material comprising reversible and irreversible photochemical functional constituents
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United States of America Patent
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Feb 21, 2012
Grant Date -
May 28, 2009
app pub date -
Mar 28, 2006
filing date -
Mar 31, 2005
priority date (Note) -
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Abstract
The invention relates to a security material comprising a carrier and at least one photochromic Protein and/or a mutein of a photochromic protein. The security material is characterized in that it comprises at least one irreversible photosensitive layer on the carrier, and the at least one photochromic protein and/or mutein is contained at least in the at least one photosensitive layer and/or in an optional additional layer. The inventive security material is also characterized in that it is highly forgery-proof, the photochromic biomolecule cannot be removed therefrom in a usable form, and the photochromic biomolecule does not need to be supplied to a large group of clients.
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